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King Main Bearings: +1.0-A1

King Main Bearings: +1.0

Part Number: MB5259AM1.0

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Out of Stock

Quantity 1 equals 5 main bearings


These King AM-Series main bearings are recommended for street or marine applications. These King AM-Series main bearings have superior embedability, which provides greater macro-particle that reduces scratching of the crank journals and tearing or weakening of the Babbitt overlays. These King AM-Series main bearings feature tolerance control up to plus or minus .0001 and are lead-free, making them environmentally friendly and user-safe.


  • Crankshaft: 54.981/55.001
  • Housing: 58.999/59.019
  • Length: 20.00
  • Max Wall Thickness: 2.004


  • K20A2
  • K20Z1
  • K23A1
  • K24Z3
  • K24A2

Images may be for reference only


Brand: King Engine Bearings
Part Number: MB5259AM1.0
Bearing Thickness: +1.0
UPC: 611500436635

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